So with the old client I would stay logged in to both my NA and EUW accounts at the same time. I had to install the game twice to make this work, but that's a small price to pay for quickly switching and talking between the different friend groups I play with. This new client seems to be pretty freaking good at preventing me from doing something similar. I can get around it with some work, but it's a lot more work than I'm willing to do every time I want to play League.
Is there a reason for this? Has anyone had any luck running two or more accounts at once like that? I'm sure I can get it back to where I have a single shortcut for each account, but if I don't have to put in that amount of work that would be great.